In my career as a finish carpenter we didn’t trust the appliance installation guys from most suppliers so we’ve seen most of the middle and top end models.
Be careful with Wolf, Viking, Subzero and others in the top price ranges.
The Subzero’s we’ve installed the past 3 or 4 years were built like tanks, can be serviced without removing them, but the insides made us a little puzzled in how they were laid out. Counter depth fridges don’t hold much. If the fridge and freezer are separate units that are joined, make sure to use a good installer that can make sure the cabinet opening is sized correctly before the cabinet guys leave.
We almost stopped going by the rough openings given in the installation instructions (best to have appliances on site when installing cabinets).
Viking and Wolf (any higher end appliance) will have gas/electric/water locations spelled out in the installation instructions and they can be different from what most electricians and plumbers use when roughing in. I seem to have faught mostly with plumbers on the gas line locations, but electricians will surface mount a big 4x4 box that has to be recessed in a certain location.
Gas cook tops are the biggest pain, because it’s easiest to install it over a blanked out top drawer, rather than carefully routing the gas line with a few elbows to allow a full depth top drawer. Cabinet sales people will try to sell you on a blanked drawer, lazy installers will try to sell you on a blank drawer, plumbers will act stupid and often refuse to add a few elbows to the regulator to allow the gas line to fit tight to the wall. It’s rare that a top drawer can’t be used and after it’s installed is too late to fix it cheaply.
There’s an appliance repair guy on YouTube that’s really good about which models to avoid.
Solid basic cooktop and convection double oven from kitchen aid is my preference. These are a couple years old, but were still being sold not long ago. Expect $2500 for the 5 burner with mega burner in the middle, and $3500 for the double oven with convection in the top. Maybe $500 more each with inflation.

